What Is Lactobacillus/Angelica Keiskei Leaf/Stem Extract Ferment Filtrate?
Lactobacillus/Angelica Keiskei Leaf/Stem Extract Ferment Filtrate is a fermented liquid made from the leaves and stems of Angelica keiskei, a hardy green plant native to Japan also called ashitaba. The plant material is steeped to pull out its natural vitamins, polyphenols and minerals, then it is blended with the probiotic bacterium Lactobacillus. During fermentation the bacteria break down large plant molecules into smaller ones that skin can more easily use and they also create new beneficial substances such as peptides and organic acids. Once fermentation finishes the mixture is carefully filtered to remove solids and live bacteria, leaving a clear nutrient rich filtrate.
The idea of fermenting plant extracts took off in Korean and Japanese skin care where brands looked for gentle ways to boost antioxidants without harsh chemicals. Angelica keiskei appealed because the plant has long been eaten as a health food and its leaves are known for high antioxidant content. Adding Lactobacillus made the extract more active and easier to absorb, so formulators soon included it in brightening serums, anti aging creams, light lotions, sheet masks and after sun gels. Today you will often spot it in products that promise to defend skin from environmental stress or give a fresh, healthy glow.
Lactobacillus/Angelica Keiskei Leaf/Stem Extract Ferment Filtrate’s Cosmetic Benefits/Uses
This ferment filtrate is valued mainly for its antioxidant action. By neutralizing free radicals it helps shield skin from daily damage caused by sunlight, pollution and stress. Regular use can lessen the look of dullness and fine lines because antioxidants support the skin’s own repair processes. In a formula it also works well with other soothing or hydrating ingredients, making the overall product more complete and supportive for a resilient complexion.
Who Can Use Lactobacillus/Angelica Keiskei Leaf/Stem Extract Ferment Filtrate
This ferment filtrate is gentle enough for most skin types, including dry, balanced, combination and oily. Its soothing antioxidant profile makes it a smart pick for sensitive or easily irritated skin because it lacks common triggers like fragrance or harsh acids. Very acne-prone skin can also benefit since the lightweight liquid absorbs quickly and does not leave a greasy residue that might clog pores.
The ingredient is produced from plant leaves and stems plus probiotic bacteria, with no animal derivatives, so it is suitable for vegans and vegetarians.
Pregnant or breastfeeding individuals are not known to face special risks from topical use, but this is not medical advice. Whenever expecting or nursing it is best to show any skin care product to a qualified health professional first.
Lactobacillus/Angelica Keiskei Leaf/Stem Extract Ferment Filtrate does not increase photosensitivity, so it will not make skin more prone to sunburn. Normal daily sun protection is still recommended for overall skin health.
Potential Side Effects/Adverse Reactions
Reactions to topical Lactobacillus/Angelica Keiskei Leaf/Stem Extract Ferment Filtrate vary from person to person. The following are potential side effects and most users will not experience them when the ingredient is formulated and used correctly.
- Mild redness or warmth
- Tingling or slight stinging on very sensitive skin
- Temporary itching
- Rare allergic rash such as hives
- Breakout flare-up if combined with very rich occlusive bases on acne-prone skin
If any negative reaction occurs stop using the product and consult a healthcare professional or dermatologist.
Comedogenic Rating
Rating: 0 / 5. Lactobacillus/Angelica Keiskei Leaf/Stem Extract Ferment Filtrate is a water-light ferment with no heavy oils, waxes or fatty acids that could block pores. Its small antioxidant molecules and post-biotic by-products absorb quickly and leave no residue, so it is considered non-comedogenic.
Because of this rating it is generally suitable for skin prone to acne or breakouts. Some formulas may pair the ferment with richer emollients, so always check the overall ingredient list.
Summary
Lactobacillus/Angelica Keiskei Leaf/Stem Extract Ferment Filtrate acts mainly as an antioxidant. Fermentation breaks down Angelica keiskei plant compounds into smaller forms and adds probiotic-derived peptides and organic acids that help neutralise free radicals and support the skin’s own repair processes. The result is a gentle boost to brightness and resilience with a feather-light feel.
The ferment is not yet as famous as staples like green tea or vitamin C but it is gaining traction in Korean and Japanese inspired formulas, especially in brightening essences, soothing lotions and after-sun gels. Brands appreciate its clean label appeal and its compatibility with a broad range of skin types.
Safety data show a very low risk of irritation or allergy for most people, and its non-comedogenic nature suits sensitive or acne-prone skin. Still, everyone’s skin is unique so it is smart to patch test any new product that contains this ingredient before applying it to the full face.